The purpose of this study is to determine the aim of primary school administrators' use of humor and the organizational effects of their use of humor according to the opinions of the school administrators and teachers. The study was modelled as a multiple holistic case study. The study group consists of 9 administrators and 12 teachers working in the primary schools in the province of Antalya in the year of 2015. For data collection, the researcher developed and used a semi-structured data collection form. The data obtained were subjected to both descriptive analysis and content analysis. As a result, both the administrators and the teachers reported that the constructive use of humor of the primary school administrators was superior to the destructive ones. The results also revealed that the positive effects of the humor used by administrators were higher than the negative effects on school and subordinates.